--- /dev/null
+# Copyright 1999-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+PYTHON_COMPAT=( python3_{6,7,8} )
+inherit cmake-utils llvm.org multilib-minimal multiprocessing \
+ pax-utils python-any-r1 toolchain-funcs
+
+DESCRIPTION="Low Level Virtual Machine"
+HOMEPAGE="https://llvm.org/"
+LLVM_COMPONENTS=( llvm )
+llvm.org_set_globals
+
+# Those are in lib/Targets, without explicit CMakeLists.txt mention
+ALL_LLVM_EXPERIMENTAL_TARGETS=( ARC AVR )
+# Keep in sync with CMakeLists.txt
+ALL_LLVM_TARGETS=( AArch64 AMDGPU ARM BPF Hexagon Lanai Mips MSP430
+ NVPTX PowerPC RISCV Sparc SystemZ WebAssembly X86 XCore
+ "${ALL_LLVM_EXPERIMENTAL_TARGETS[@]}" )
+ALL_LLVM_TARGETS=( "${ALL_LLVM_TARGETS[@]/#/llvm_targets_}" )
+
+# Additional licenses:
+# 1. OpenBSD regex: Henry Spencer's license ('rc' in Gentoo) + BSD.
+# 2. xxhash: BSD.
+# 3. MD5 code: public-domain.
+# 4. ConvertUTF.h: TODO.
+
+LICENSE="Apache-2.0-with-LLVM-exceptions UoI-NCSA BSD public-domain rc"
+SLOT="$(ver_cut 1)"
+KEYWORDS=""
+IUSE="debug doc exegesis gold libedit +libffi ncurses test xar xml z3
+ kernel_Darwin ${ALL_LLVM_TARGETS[*]}"
+REQUIRED_USE="|| ( ${ALL_LLVM_TARGETS[*]} )"
+RESTRICT="!test? ( test )"
+
+RDEPEND="
+ sys-libs/zlib:0=[${MULTILIB_USEDEP}]
+ exegesis? ( dev-libs/libpfm:= )
+ gold? (
+ || (
+ >=sys-devel/binutils-2.31.1-r4:*[plugins]
+ <sys-devel/binutils-2.31.1-r4:*[cxx]
+ )
+ )
+ libedit? ( dev-libs/libedit:0=[${MULTILIB_USEDEP}] )
+ libffi? ( >=dev-libs/libffi-3.0.13-r1:0=[${MULTILIB_USEDEP}] )
+ ncurses? ( >=sys-libs/ncurses-5.9-r3:0=[${MULTILIB_USEDEP}] )
+ xar? ( app-arch/xar )
+ xml? ( dev-libs/libxml2:2=[${MULTILIB_USEDEP}] )
+ z3? ( >=sci-mathematics/z3-4.7.1:0=[${MULTILIB_USEDEP}] )"
+DEPEND="${RDEPEND}
+ gold? ( sys-libs/binutils-libs )"
+BDEPEND="
+ dev-lang/perl
+ sys-devel/gnuconfig
+ kernel_Darwin? (
+ <sys-libs/libcxx-$(ver_cut 1-3).9999
+ >=sys-devel/binutils-apple-5.1
+ )
+ doc? ( $(python_gen_any_dep '
+ dev-python/recommonmark[${PYTHON_USEDEP}]
+ dev-python/sphinx[${PYTHON_USEDEP}]
+ ') )
+ libffi? ( virtual/pkgconfig )
+ ${PYTHON_DEPS}"
+# There are no file collisions between these versions but having :0
+# installed means llvm-config there will take precedence.
+RDEPEND="${RDEPEND}
+ !sys-devel/llvm:0"
+PDEPEND="sys-devel/llvm-common
+ gold? ( >=sys-devel/llvmgold-${SLOT} )"
+
+# least intrusive of all
+CMAKE_BUILD_TYPE=RelWithDebInfo
+
+python_check_deps() {
+ use doc || return 0
+
+ has_version -b "dev-python/recommonmark[${PYTHON_USEDEP}]" &&
+ has_version -b "dev-python/sphinx[${PYTHON_USEDEP}]"
+}
+
+check_distribution_components() {
+ if [[ ${CMAKE_MAKEFILE_GENERATOR} == ninja ]]; then
+ local all_targets=() my_targets=() l
+ cd "${BUILD_DIR}" || die
+
+ while read -r l; do
+ if [[ ${l} == install-*-stripped:* ]]; then
+ l=${l#install-}
+ l=${l%%-stripped*}
+
+ case ${l} in
+ # shared libs
+ LLVM|LLVMgold)
+ ;;
+ # TableGen lib + deps
+ LLVMDemangle|LLVMSupport|LLVMTableGen)
+ ;;
+ # static libs
+ LLVM*)
+ continue
+ ;;
+ # meta-targets
+ distribution|llvm-libraries)
+ continue
+ ;;
+ esac
+
+ all_targets+=( "${l}" )
+ fi
+ done < <(ninja -t targets all)
+
+ while read -r l; do
+ my_targets+=( "${l}" )
+ done < <(get_distribution_components $"\n")
+
+ local add=() remove=()
+ for l in "${all_targets[@]}"; do
+ if ! has "${l}" "${my_targets[@]}"; then
+ add+=( "${l}" )
+ fi
+ done
+ for l in "${my_targets[@]}"; do
+ if ! has "${l}" "${all_targets[@]}"; then
+ remove+=( "${l}" )
+ fi
+ done
+
+ if [[ ${#add[@]} -gt 0 || ${#remove[@]} -gt 0 ]]; then
+ eqawarn "get_distribution_components() is outdated!"
+ eqawarn " Add: ${add[*]}"
+ eqawarn "Remove: ${remove[*]}"
+ fi
+ cd - >/dev/null || die
+ fi
+}
+
+src_prepare() {
+ # Fix llvm-config for shared linking and sane flags
+ # https://bugs.gentoo.org/show_bug.cgi?id=565358
+ eapply "${FILESDIR}"/9999/0007-llvm-config-Clean-up-exported-values-update-for-shar.patch
+
+ # disable use of SDK on OSX, bug #568758
+ sed -i -e 's/xcrun/false/' utils/lit/lit/util.py || die
+
+ # Update config.guess to support more systems
+ cp "${BROOT}/usr/share/gnuconfig/config.guess" cmake/ || die
+
+ # User patches + QA
+ cmake-utils_src_prepare
+}
+
+# Is LLVM being linked against libc++?
+is_libcxx_linked() {
+ local code='#include <ciso646>
+#if defined(_LIBCPP_VERSION)
+ HAVE_LIBCXX
+#endif
+'
+ local out=$($(tc-getCXX) ${CXXFLAGS} ${CPPFLAGS} -x c++ -E -P - <<<"${code}") || return 1
+
+ [[ ${out} == *HAVE_LIBCXX* ]]
+}
+
+get_distribution_components() {
+ local sep=${1-;}
+
+ local out=(
+ # shared libs
+ LLVM
+ LTO
+ Remarks
+
+ # tools
+ llvm-config
+
+ # common stuff
+ cmake-exports
+ llvm-headers
+
+ # libraries needed for clang-tblgen
+ LLVMDemangle
+ LLVMSupport
+ LLVMTableGen
+ )
+
+ if multilib_is_native_abi; then
+ out+=(
+ # utilities
+ llvm-tblgen
+ FileCheck
+ llvm-PerfectShuffle
+ count
+ not
+ yaml-bench
+
+ # tools
+ bugpoint
+ dsymutil
+ llc
+ lli
+ lli-child-target
+ llvm-addr2line
+ llvm-ar
+ llvm-as
+ llvm-bcanalyzer
+ llvm-c-test
+ llvm-cat
+ llvm-cfi-verify
+ llvm-config
+ llvm-cov
+ llvm-cvtres
+ llvm-cxxdump
+ llvm-cxxfilt
+ llvm-cxxmap
+ llvm-diff
+ llvm-dis
+ llvm-dlltool
+ llvm-dwarfdump
+ llvm-dwp
+ llvm-elfabi
+ llvm-exegesis
+ llvm-extract
+ llvm-ifs
+ llvm-install-name-tool
+ llvm-jitlink
+ llvm-lib
+ llvm-link
+ llvm-lipo
+ llvm-lto
+ llvm-lto2
+ llvm-mc
+ llvm-mca
+ llvm-modextract
+ llvm-mt
+ llvm-nm
+ llvm-objcopy
+ llvm-objdump
+ llvm-opt-report
+ llvm-pdbutil
+ llvm-profdata
+ llvm-ranlib
+ llvm-rc
+ llvm-readelf
+ llvm-readobj
+ llvm-reduce
+ llvm-rtdyld
+ llvm-size
+ llvm-split
+ llvm-stress
+ llvm-strings
+ llvm-strip
+ llvm-symbolizer
+ llvm-undname
+ llvm-xray
+ obj2yaml
+ opt
+ sancov
+ sanstats
+ verify-uselistorder
+ yaml2obj
+
+ # python modules
+ opt-viewer
+ )
+
+ use doc && out+=(
+ docs-dsymutil-man
+ docs-llvm-dwarfdump-man
+ docs-llvm-man
+ docs-llvm-html
+ )
+
+ use gold && out+=(
+ LLVMgold
+ )
+ fi
+
+ printf "%s${sep}" "${out[@]}"
+}
+
+multilib_src_configure() {
+ local ffi_cflags ffi_ldflags
+ if use libffi; then
+ ffi_cflags=$($(tc-getPKG_CONFIG) --cflags-only-I libffi)
+ ffi_ldflags=$($(tc-getPKG_CONFIG) --libs-only-L libffi)
+ fi
+
+ local libdir=$(get_libdir)
+ local mycmakeargs=(
+ # disable appending VCS revision to the version to improve
+ # direct cache hit ratio
+ -DLLVM_APPEND_VC_REV=OFF
+ -DCMAKE_INSTALL_PREFIX="${EPREFIX}/usr/lib/llvm/${SLOT}"
+ -DLLVM_LIBDIR_SUFFIX=${libdir#lib}
+
+ -DBUILD_SHARED_LIBS=OFF
+ -DLLVM_BUILD_LLVM_DYLIB=ON
+ -DLLVM_LINK_LLVM_DYLIB=ON
+ -DLLVM_DISTRIBUTION_COMPONENTS=$(get_distribution_components)
+
+ # cheap hack: LLVM combines both anyway, and the only difference
+ # is that the former list is explicitly verified at cmake time
+ -DLLVM_TARGETS_TO_BUILD=""
+ -DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD="${LLVM_TARGETS// /;}"
+ -DLLVM_BUILD_TESTS=$(usex test)
+
+ -DLLVM_ENABLE_FFI=$(usex libffi)
+ -DLLVM_ENABLE_LIBEDIT=$(usex libedit)
+ -DLLVM_ENABLE_TERMINFO=$(usex ncurses)
+ -DLLVM_ENABLE_LIBXML2=$(usex xml)
+ -DLLVM_ENABLE_ASSERTIONS=$(usex debug)
+ -DLLVM_ENABLE_LIBPFM=$(usex exegesis)
+ -DLLVM_ENABLE_EH=ON
+ -DLLVM_ENABLE_RTTI=ON
+ -DLLVM_ENABLE_Z3_SOLVER=$(usex z3)
+
+ -DLLVM_HOST_TRIPLE="${CHOST}"
+
+ -DFFI_INCLUDE_DIR="${ffi_cflags#-I}"
+ -DFFI_LIBRARY_DIR="${ffi_ldflags#-L}"
+ # used only for llvm-objdump tool
+ -DHAVE_LIBXAR=$(multilib_native_usex xar 1 0)
+
+ # disable OCaml bindings (now in dev-ml/llvm-ocaml)
+ -DOCAMLFIND=NO
+ )
+
+ if is_libcxx_linked; then
+ # Smart hack: alter version suffix -> SOVERSION when linking
+ # against libc++. This way we won't end up mixing LLVM libc++
+ # libraries with libstdc++ clang, and the other way around.
+ mycmakeargs+=(
+ -DLLVM_VERSION_SUFFIX="libcxx"
+ )
+ fi
+
+# Note: go bindings have no CMake rules at the moment
+# but let's kill the check in case they are introduced
+# if ! multilib_is_native_abi || ! use go; then
+ mycmakeargs+=(
+ -DGO_EXECUTABLE=GO_EXECUTABLE-NOTFOUND
+ )
+# fi
+
+ use test && mycmakeargs+=(
+ -DLLVM_LIT_ARGS="-vv;-j;${LIT_JOBS:-$(makeopts_jobs "${MAKEOPTS}" "$(get_nproc)")}"
+ )
+
+ if multilib_is_native_abi; then
+ mycmakeargs+=(
+ -DLLVM_BUILD_DOCS=$(usex doc)
+ -DLLVM_ENABLE_OCAMLDOC=OFF
+ -DLLVM_ENABLE_SPHINX=$(usex doc)
+ -DLLVM_ENABLE_DOXYGEN=OFF
+ -DLLVM_INSTALL_UTILS=ON
+ )
+ use doc && mycmakeargs+=(
+ -DCMAKE_INSTALL_MANDIR="${EPREFIX}/usr/lib/llvm/${SLOT}/share/man"
+ -DLLVM_INSTALL_SPHINX_HTML_DIR="${EPREFIX}/usr/share/doc/${PF}/html"
+ -DSPHINX_WARNINGS_AS_ERRORS=OFF
+ )
+ use gold && mycmakeargs+=(
+ -DLLVM_BINUTILS_INCDIR="${EPREFIX}"/usr/include
+ )
+ fi
+
+ if tc-is-cross-compiler; then
+ local tblgen="${EPREFIX}/usr/lib/llvm/${SLOT}/bin/llvm-tblgen"
+ [[ -x "${tblgen}" ]] \
+ || die "${tblgen} not found or usable"
+ mycmakeargs+=(
+ -DCMAKE_CROSSCOMPILING=ON
+ -DLLVM_TABLEGEN="${tblgen}"
+ )
+ fi
+
+ # workaround BMI bug in gcc-7 (fixed in 7.4)
+ # https://bugs.gentoo.org/649880
+ # apply only to x86, https://bugs.gentoo.org/650506
+ if tc-is-gcc && [[ ${MULTILIB_ABI_FLAG} == abi_x86* ]] &&
+ [[ $(gcc-major-version) -eq 7 && $(gcc-minor-version) -lt 4 ]]
+ then
+ local CFLAGS="${CFLAGS} -mno-bmi"
+ local CXXFLAGS="${CXXFLAGS} -mno-bmi"
+ fi
+
+ # LLVM_ENABLE_ASSERTIONS=NO does not guarantee this for us, #614844
+ use debug || local -x CPPFLAGS="${CPPFLAGS} -DNDEBUG"
+ cmake-utils_src_configure
+
+ multilib_is_native_abi && check_distribution_components
+}
+
+multilib_src_compile() {
+ cmake-utils_src_compile
+
+ pax-mark m "${BUILD_DIR}"/bin/llvm-rtdyld
+ pax-mark m "${BUILD_DIR}"/bin/lli
+ pax-mark m "${BUILD_DIR}"/bin/lli-child-target
+
+ if use test; then
+ pax-mark m "${BUILD_DIR}"/unittests/ExecutionEngine/Orc/OrcJITTests
+ pax-mark m "${BUILD_DIR}"/unittests/ExecutionEngine/MCJIT/MCJITTests
+ pax-mark m "${BUILD_DIR}"/unittests/Support/SupportTests
+ fi
+}
+
+multilib_src_test() {
+ # respect TMPDIR!
+ local -x LIT_PRESERVES_TMP=1
+ cmake-utils_src_make check
+}
+
+src_install() {
+ local MULTILIB_CHOST_TOOLS=(
+ /usr/lib/llvm/${SLOT}/bin/llvm-config
+ )
+
+ local MULTILIB_WRAPPED_HEADERS=(
+ /usr/include/llvm/Config/llvm-config.h
+ )
+
+ local LLVM_LDPATHS=()
+ multilib-minimal_src_install
+
+ # move wrapped headers back
+ mv "${ED}"/usr/include "${ED}"/usr/lib/llvm/${SLOT}/include || die
+}
+
+multilib_src_install() {
+ DESTDIR=${D} cmake-utils_src_make install-distribution
+
+ # move headers to /usr/include for wrapping
+ rm -rf "${ED}"/usr/include || die
+ mv "${ED}"/usr/lib/llvm/${SLOT}/include "${ED}"/usr/include || die
+
+ LLVM_LDPATHS+=( "${EPREFIX}/usr/lib/llvm/${SLOT}/$(get_libdir)" )
+}
+
+multilib_src_install_all() {
+ local revord=$(( 9999 - ${SLOT} ))
+ newenvd - "60llvm-${revord}" <<-_EOF_
+ PATH="${EPREFIX}/usr/lib/llvm/${SLOT}/bin"
+ # we need to duplicate it in ROOTPATH for Portage to respect...
+ ROOTPATH="${EPREFIX}/usr/lib/llvm/${SLOT}/bin"
+ MANPATH="${EPREFIX}/usr/lib/llvm/${SLOT}/share/man"
+ LDPATH="$( IFS=:; echo "${LLVM_LDPATHS[*]}" )"
+ _EOF_
+
+ docompress "/usr/lib/llvm/${SLOT}/share/man"
+}
+
+pkg_postinst() {
+ elog "You can find additional opt-viewer utility scripts in:"
+ elog " ${EROOT}/usr/lib/llvm/${SLOT}/share/opt-viewer"
+ elog "To use these scripts, you will need Python along with the following"
+ elog "packages:"
+ elog " dev-python/pygments (for opt-viewer)"
+ elog " dev-python/pyyaml (for all of them)"
+}
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